Psyche Rock was sampled for the bells.
Check out this breakdown/remake and compare with the 30s theme: https://www.youtube.com/watch?v=qoq5-bLYM5Q
(EDIT: It is even easier to hear the Amen Break in the extended version, check this site for the timestamps: https://www.whosampled.com/sample/808/Christopher-Tyng-Futur... )
Also keep in mind that the original Psyche Rock is this one: https://www.youtube.com/watch?v=Vb32bdQJBxM
...and not this 1997 remix by Fatboy Slim, which is the first result in Youtube for Psyche Rock, and also has an Amen-ish break, and sounds indeed close to the Futurama theme: https://www.youtube.com/watch?v=qssa6ec7faQ
Psyche Rock was sampled for the bells.
Check out this breakdown/remake and compare with the 30s theme: https://www.youtube.com/watch?v=qoq5-bLYM5Q
(EDIT: It is even easier to hear the Amen Break in the extended version, check this site for the timestamps: https://www.whosampled.com/sample/808/Christopher-Tyng-Futur... )
Also keep in mind that the original Psyche Rock is this one: https://www.youtube.com/watch?v=Vb32bdQJBxM
...and not this 1997 remix by Fatboy Slim, which is the first result in Youtube for Psyche Rock, and also has an Amen-ish break, and sounds indeed close to the Futurama theme: https://www.youtube.com/watch?v=qssa6ec7faQ